Profil épidémio-clinique et évolutif des cardiomyopathies dilatées au Centre Hospitalier Universitaire de Brazzaville, Congo

L'objectif de cette étude est de contribuer à l'amélioration de la prise en charge des patients porteurs de cardiomyopathies dilatées (CMD) à Brazzaville. Cette étude prospective et analytique, a été réalisée au CHU de Brazzaville entre le 1er Janvier 2014 et le 30 Juin 2015. Elle a inclus les patients hospitalisés dans le service de cardiologie pour une insuffisance cardiaque (IC) en rapport avec une CMD. L'étude a porté sur 100 patients. La fréquence hospitalière de la CMD était de 32,1%. Il s'agissait de 38 hommes (38%) et 62 femmes (62%), âgés en moyenne de 52,9 ± 17,1 ans. L'IC était globale dans 72 cas (72%). L'ECG s'inscrivait en rythme sinusal (95%), et objectivait une hypertrophie ventriculaire gauche (40%), un bloc de branche gauche (16%), et une fibrillation auriculaire (5%). La fraction d'éjection du ventricule gauche (VG) était en moyenne de 33,4 ± 6,8%, et le diamètre télédiastolique du VG de 65,5 ± 7,0 mm. Le traitement comportait un diurétique de l'anse (100%), un IEC/ARA2 (100%), un bêtabloquant (38%), un digitalique (30%), un anti-aldostérone (16%), et un anti-vitamine K (11%). Au terme d'un suivi de 12 mois, le taux de létalité globale était de 9%, le taux de réhospitalisation de 12%, et le taux de perdus de vue de 41%. Cette étude a montré que la CMD est une affection fréquente, et une des principales causes d'insuffisance cardiaque. La durée de suivi brève et le nombre important de perdus de vue ne permettent pas d'en évaluer la survie dans notre contexte

Patients-related predictors of poor adherence to antihypertensive treatment in Congo-Brazzaville : a cross-sectional study

Studies suggest that poor adherence to hypertension treatment is responsible for about two-thirds of uncontrolled hypertension, leading to complications such as stroke. Yet, patients-associated factors explaining poor adherence to antihypertensive treatment in Africa remains under-researched. This study aimed at assessing the level of compliance in hypertensive patients and identifying patients-related predictors of poor compliance. The study was a prospective cross-sectional. The data was collected during a six-month period. Participants were recruited from outpatients’ departments in three urban hospitals in Congo-Brazzaville. Bivariate and multivariate analyses (using T-test and chi-2) were performed to identify predictors of poor compliance. In total, 212 hypertensive patients were included. Their mean age was 58.3 ± 10.6 years (range 34 – 81). Compliance was poor in 69 (32.5%) and good or fair in 143 cases (67.5%). Bivariate analysis indicated several patient-related factors that could predict poor adherence. However, after adjustment by logistic regression, only knowledge of the treatment and perception of the severity of complications of hypertension showed statistically significant associations with poor compliance (p =0.0170 and p=0.0373 respectively). Efforts to enhance patients’ awareness about hypertension’s treatment and severity of the complications associated with the disease are called for in this particular context

Patients-related predictors of poor adherence to antihypertensive treatment in Congo-Brazzaville : a cross-sectional study

Studies suggest that poor adherence to hypertension treatment is responsible for about two-thirds of uncontrolled hypertension, leading to complications such as stroke. Yet, patients-associated factors explaining poor adherence to antihypertensive treatment in Africa remains under-researched. This study aimed at assessing the level of compliance in hypertensive patients and identifying patients-related predictors of poor compliance. The study was a prospective cross-sectional. The data was collected during a six-month period. Participants were recruited from outpatients’ departments in three urban hospitals in Congo-Brazzaville. Bivariate and multivariate analyses (using T-test and chi-2) were performed to identify predictors of poor compliance. In total, 212 hypertensive patients were included. Their mean age was 58.3 ± 10.6 years (range 34 – 81). Compliance was poor in 69 (32.5%) and good or fair in 143 cases (67.5%). Bivariate analysis indicated several patient-related factors that could predict poor adherence. However, after adjustment by logistic regression, only knowledge of the treatment and perception of the severity of complications of hypertension showed statistically significant associations with poor compliance (p =0.0170 and p=0.0373 respectively). Efforts to enhance patients’ awareness about hypertension’s treatment and severity of the complications associated with the disease are called for in this particular context

Apport du Holter ECG dans le bilan étiologique des infarctus cérébraux à Brazzaville, Congo

Déterminer la prévalence des troubles rythmiques au cours des infarctus cérébraux et identifier les facteurs prédictifs de la fibrillation atriale (FA) paroxystique. Il s'est agi d'une étude transversale, descriptive et analytique, menée à Brazzaville entre janvier 2012 et décembre 2016. Elle a porté sur une série consécutive de 267 patients victimes d'un accident vasculaire cérébral ischémique transitoire (n = 17) ou constitué (n = 250), documenté par un scanner cérébral. Tous ces patients ont bénéficié d'un enregistrement Holter ECG dès 24h, réalisé dans le cadre de la recherche étiologique. Les principales anomalies rythmiques enregistrées ont été répertoriées et la régression logistique a permis l'identification des facteurs prédictifs de survenue de la FA paroxystique. Il s'agissait de 164 hommes (61,4%) et 103 femmes (38,6%), âgés en moyenne de 60,2 ± 12,1 ans (extrêmes: 22 et 94 ans). Les principaux facteurs de risque cardiovasculaire identifiés étaient une hypertension artérielle (HTA) dans 214 cas (80,1%), un diabète sucré dans 36 cas (13,5%), et un tabagisme dans 18 cas (6,7%), avec un taux de cumul de 1,5 facteur par individu. L'examen Holter ECG, normal dans 216 cas (81%), était pathologique dans 51 cas (19%). Les principales anomalies enregistrées consistaient en des extrasystoles ventriculaires bénignes (n = 32), une FA paroxystique (n = 7), des extrasystoles supraventriculaires (n = 5), une tachycardie ventriculaire (TV) non soutenue (n = 4), une TV soutenue (n = 2) et un bloc auriculo-ventriculaire type Mobitz II (n = 1). La fréquence de la FA paroxystique était de 2,6%. En analyse bivariée, il n'a pas été noté de corrélation entre la FA paroxystique et le sexe (p = 0,890), l'HTA (p = 0,818), le diabète (p = 0,839), le tabac (p = 0,969). En analyse multivariée, seul l'âge était prédictif de la survenue d'une FA paroxystique au cours des infarctus cérébraux (OR = 1,11;p = 0,0134). Il ressort de cette étude préliminaire que les troubles du rythme emboligènes sont relativement rares au cours des infarctus cérébraux à Brazzaville. La FA paroxystique, quoique peu fréquente, reste essentiellement corrélée à l'âge. Sa recherche systématique chez les sujets âgés contribue à améliorer la prise en charge

Post hoc study to investigate the potential causes of poor quality of cardiovascular medicines collected in sub-Saharan countries

International audienceObjectives: The incidence of cardiovascular diseases is increasing and there is a growing need to provide access to quality cardio drugs in Africa. In the SEVEN study, we analysed 1530 cardiovascular drug samples randomly collected from 10 African countries. By that time, of the seven drugs products analysed, only those containing amlodipine and captopril had very low assay values with active substance contents that could be less than 75% of those expected. In this article we investigate complementary aspects of the amlodipine and captopril samples so to explain the previously observed low assays for these two drugs.Design: Post hoc analysis of the captopril and amlodipine drugs samples and their packages collected in the context of the SEVEN study.Setting: 10 countries were concerned: Benin, Burkina Faso, Congo, Democratic Republic of the Congo, Guinea, Côte d'Ivoire, Mauritania, Niger, Senegal and Togo.Participants: Local scientists and hospital practitioners collected the drug samples in the 10 African countries.Outcome measures: The drug amount and the relative amounts of drug impurities, as well as the main compounds of the drugs packaging, were analysed.Results: Identification of the blister packaging of the samples led to separate both amlodipine and captopril drug samples in two groups. Mann Whitney's bilateral test showed a significant difference (p<0.0001) between the median value of the captopril dosage when tablets are packaged in blisters providing higher protection to humidity (n=105) as opposed to the tablets packaged in blisters providing lower humidity protection (n=130).Conclusion: Based on these results, particular attention should be paid to the materials and types of packaging used in order to minimise the lack of control over the exposures and drug circuits present in these different countries

Factors associated with poor adherence to medication among hypertensive patients in twelve low and middle income Sub-Saharan countries

International audienceINTRODUCTION: Over the past few decades, the prevalence of hypertension has dramatically increased in Sub-Saharan Africa. Poor adherence has been identified as a major cause of failure to control hypertension. Scarce data are available in Africa.AIMS: We assessed adherence to medication and identified socioeconomics, clinical and treatment factors associated with low adherence among hypertensive patients in 12 sub-Saharan African countries.METHOD: We conducted a cross-sectional survey in urban clinics of both low and middle income countries. Data were collected by physicians on demographics, treatment and clinical data among hypertensive patients attending the clinics. Adherence was assessed by questionnaires completed by the patients. Factors associated with low adherence were investigated using logistic regression with a random effect on countries.RESULTS: There were 2198 individuals from 12 countries enrolled in the study. Overall, 678 (30.8%), 738 (33.6%), 782 (35.6%) participants had respectively low, medium and high adherence to antihypertensive medication. Multivariate analysis showed that the use of traditional medicine (OR: 2.28, 95%CI [1.79-2.90]) and individual wealth index (low vs. high wealth: OR: 1.86, 95%CI [1.35-2.56] and middle vs. high wealth: OR: 1.42, 95%CI [1.11-1.81]) were significantly and independently associated with poor adherence to medication. In stratified analysis, these differences in adherence to medication according to individual wealth index were observed in low-income countries (p<0.001) but not in middle-income countries (p = 0.17). In addition, 26.5% of the patients admitted having stopped their treatment due to financial reasons and this proportion was 4 fold higher in the lowest than highest wealth group (47.8% vs 11.4%) (p<0.001).CONCLUSION: This study revealed the high frequency of poor adherence in African patients and the associated factors. These findings should be useful for tailoring future programs to tackle hypertension in low income countries that are better adapted to patients, with a potential associated enhancement of their effectiveness

Antihypertensive strategies and hypertension control in Sub-Saharan Africa

International audienc